Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this receiver.
Text excerpt from page 20 (click to view)
Adjustment Method for Weight Sensor
When the main PCB or weight sensor is changed, please carry the following âZeroâ adjustment out for the weight sensor. Procedure 1. 2. 3. 4. 5. Plug in power cord (note: please do not touch the âClearâ key) Open the door Place metal turntable Close the door Touch âMore/Lessâ key two times (No beep sound when key is touched) Touch âWeigh Dishâ key two times Touch âSTARTâ key After 4 sec. display shows 1230 Open the door Place the glass turntable Close the door Touch âSTARTâ After 4 sec. display â1230â stops the flashing Display Demonstration words âWELCOME SANYO....â
6. 7. 8. 9. 10. 11. 12. 13.
Flashing â0000â Flashing â1230â
Note: When the display show the error mark âE-â during setting,please try again from the beginning. In this case, please check if the wiring between weight sensor and main PCB is correctly connected.